Debugging way of thinking: rule out control circuit fault first in principle-rule out an engine per se again fault-rear row in addition to other outside fault.
排除故障思路：原则上先排除控制电路故障——再排除发动机自身故障——后排除其它外部故障。
It turns out that the brain circuit for processing fear - the amygdala - is precocious and develops way ahead of the prefrontal cortex, the seat of reasoning and executive control.
现在人们已经发现，处理恐惧的大脑回路——也就是杏仁核——比负责推理和执行控制的额前皮质要提前发育很多。
This article analyzes the main circuit and control circuit of the welder, also points out the troubleshooting and solutions.
对焊机主电路和控制电路进行了解析，给出了常见故障的处置和维修方法。
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